Finding the Fourth Proportional to 116,641.59, 160,970.49 and 65,657.61

Step by Step Solution

1. Step 1: Write the proportion equation
   116,641.59 : 160,970.49 = 65,657.61 : x
2. Step 2: Convert to fraction form
   116,641.59/160,970.49 = 65,657.61/x
3. Step 3: Cross multiply
   116,641.59x = 160,970.49 × 65,657.61
4. Step 4: Simplify right side
   116,641.59x = 10,568,937,013.22
5. Step 5: Solve for x
   x = 10,568,937,013.22/116,641.59
6. Step 6: Final answer
   x = 90,610.37